Composition for cleaning glass windows



Patented June 17, 1930 UNITED STATES- PATENT OFFICE rmrz mmaonn, or ZURICH, swrrznanmn; AND oscaa rarannnnac, or BERLIN,

' GERMANY COMPOSITION FOR CLEANING GLASS WINDOWS No Drawing. Application filed October 16, 1826, Serial No. 142,148, and in Germany April 29, 1925.

The present invention refers to a process for cleaning glass windows and such like (ceramic surfaces), a, composition for carrying out this process and a method for making the said composition.

The object of the invention is to avoid the expensive leather pieces hitherto necessary for; cleaning windows and economize work. The composition of matter has the effect to separate as watersoluble as fat soluble substances from the glass or the other surfaces and has the property to be removed from the glass by means of pieces of any material.

The process consists in washing the window surface with a composition consisting of a liquid hydrocarbon, suitable for dissolving fatty substances,'emulsified with an aqueous colloidal liquid, removing the liquid from the window and rubbing the window with an absorbing web as for instance textile material,

-pa er also printed.

he composition of matter consists of a liquid hydrocarbon and an aqueouscolloidal liquid emulsified with each other. The composition forms a disperse system of fats dissolving liquids and aqueous liquids dissolving the dirty parts soluble in water. The hydrocarbon and the aqueous liquid do not mix with each other to an homogeneous mixture, but must produce by suitable treatment an emulsion, in which disperse system the particles are so small that the adsorbing-power of the surfaces appears. These small particles are able-to adsorb the dirt substances.

Suitable hydrocarbons are: petroleum, petrol oils, gasoline, benzene (pure or commercial). As aqueous liquid solutions. of.soaps are used otassium'or sodium soap of solid or H uid atty or resin acids or mixtures of them 1 A suitable mixture consists of an emulsion of 70 parts by wei ht ofh drocarbons emulsified in 30 parts E solution of sodium soap. one ma use other colloids.

A suitable process for making the compo sition consists in causing a mixture of petrol Instead of .soaps oils with fatty acids to flow under agitation in i a solution of alkaline hydroxides or carbony weig t of-a 5 per cent the fatty acids. One agitates while adding the hydrocarbon mixture with the fatty acids to the alkaline solution neutralizing the fatty acids and forming from them an aqueous solution of soap. One mayalso mix under agitation petrol oils with a saponaceous solution.

In order to avoid or din inish a. separation of the mixture during storing it s suitable to add the fat dissolving substance another liq-o uid apt for homogeneously being mixed with. 'it, having a'higher specific gravity than the fatdissolving liquid in such amount'that the specific gravity of the fatdissolving substance is about the same of the aqueous liq uid. Such liquids are for instance halogenated hydrocarbons, carbon tetrachloride or others. The preparation of the mixture can.

be-carried as follows: i

A mixture of 100- paitts by volume of etrol oils and 33 parts by volume of car on tetrachloride is poured under agitation into an aqueous saponaceous solution containing 5 ercent soap.

e claim 1. A composition of matter for cleaning shining surfaces comprising a thin liquid vehicle consisting of a dilute alkaline soap sosignatures.

' FRITZ DIEBOLD.

' OSCAR FRIEDEBERG.

ates, preferably equivalent to the amountof 

